The motor connection instructions are inconsistent. It's upside down here  But the breadboard instructions are showing it the other way around but the wires are still on the same spot.  So I installed the motors the other way around. Perhaps it went wrong with that the image was flipped but not the cables? Also it helps to give the motors on the website instructions some names, as it was unclear which wire was which The pdf image showed it in an more understandable way 